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T. H. COSTELLO.

TELLURIAN.

No. 255,491. 'Patented Mar. 28,1882.

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T. H. COSTELLO.

TELLUEIAN.

Patented Mar. 28, 1882.

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UNTED STATES lPATENT OFFICE.

THOMAS H. COSTELLO, OF CHICAGO, ILLINOIS, ASSIGNOR TO A. H, ANDREWS Sr CO., OF SAME PLACE.

TELLURIAN.

SPECIFICATION forming part of Letters Patent No. 255,491, dated March 28, 1882.

y Application tiled March 14,1881. (No model.)

To all whom it may concern l Be it known that I, THOMAS H. COSTELLO, residing at Chicago, in the county ofCook and State of Illinois, and a citizen of the United States, have invented new and useful Improvements in Tellurians, of which the following is a full description, reference being had to the accompanying drawings, in which- Figure 1 is aside elevation Fig. 2, a detail 1o reduced in size.; Fig. 3, a top view ofthe base; Fig. 4, a side view of the base; Figs. 5, 6, and 7 det'ails of the principal devices for supporting and rotating the moon 5 Fig. 8, a side view of the parts shown 5 Fig. 9,an under side view of the p'arts shown; Fig. 10, a vertical longitudinal section of the parts' shown; Figs. 11, 12, 13, and 14, details. Fig. 1 is on a scaleof about four inches to 'a foot.` Figs. 9 to 14 are enlarged, Fig. l() being enlarged more-than the 2o other figures. y

My improvements relate to devices for rotating around the globe a ball which represents the moon, illustrating its phases and positions, which devices are a curved rod, on one end of which is the moon ball and on the other end a bevel-Wheel engaging with a fixed bevel-wheel ona shaft beneath the globe, said rod being supported ou a revolving sleeve byv means of a collar'andyoke; and to devices for holding the 3o horizonaud twilight circles Aiu place, which consist of a removable curved support having slotted ends to receive. pins connected to the circle, said support also being provided with pins to limit the movement 'of the circles.

The invention embraces other features, all of which will be f'ully described hereinafter in detail, and afterward theimprovenients will be pointed out in the claims.

In the drawings, Arepresents a suitable base, divided into twelve parts. 'c is a shaft secured to such base. b isa groove in such shaft. c isan eccentric castl upon the top of the base A.

C is the main'armavhich rotates ou the shaft ct. This arm is held'in place by means of a screw, which enters the groove b.

Bis a reciprocating bar and oscillating lever, one end of which has a ring,which encircles the eccentric c, and in the other end is a pin, d. This bar has a slot, c, at or near the center, and

lis secured to the yoke e.

it is held in place upon the under side of C by 5o the screw or boltf, which passes through such slot e.

g is a gear-wheel pivoted to the under side of C. In it is a slot, h, Fig. 12, to receive the pin d.V AThe upper part of such wheel g is less in diameter than the lower part, and each part is provided with cogs.

t' is another cog-wheel, engaging with the lowerpart of the wheel g, and to this Wheel the sh'aft D is permanently secured. The lower end of this shaft D rests, as shown, ou a stud secured to a cross-bar,j, attached to the side flanges ofthe arms C.

k is a fixed sleeve surrounding the shaft D. Its lower end is secured to a plate, Z, through which D passes, which plate has a liange, m.

nis a screw passing through a iange on the arm C and through the angem ou the plate Z, which holdsthe plate in position and prevents the rotation' of the sleeve lr. A

o is a rotating sleeve surrounding the sleeve 7.'. On the lower end of' this sleeve is a cogwhcel, p.

-gis an intermediate cog-wheel, which engages with the wheel p, and also with thel cogs on the upper part of the wheel g.

E is a ixed hub or hollow standard projecting up from the arm C.-

F is a globe upon the shaft D.

G is a sleeve, to which is secured in an inclined positiona bevel cog-wheel, r, beneath which is a disk, s. The sleeve Gris secured to the upper part ofthe standard E by means of a set-screw. Y I

t is a collar secured to the upper end ofthe sleeve o by set-screws.

u u are pins or screws .secured upon opposite sides of the collar t.

v is a yoke pivoted Vupon the pins u u.

H is a curved tube, the lower end of which I is a bevel cog-wheel located within the yoke c, to which wheel is secured asmall wire or rod, w, which passes through ahole in the cross-bar of the yoke c and through the tube'H. 95

VJ is a ball'secured to the upper end of the wirew, representing the moon. v K is asupport for the horizowcircle L. This support consists of two curved arms, a', havinga slot in the upper end of each and a socket, b', to tit over the upper end ot the xed sleeve lr. Upon the outside of each arm of the support K is a pin, c', tolimit the movement of the circle L.

M is a twilight-circle, connected to the circle L, as usual. These two circles are not complete, but each has an opening, as usual, for the passage ofthe inclined plate on which the globe is mounted. The two ends of the twilight-circle are connected by a curved bar, c. The horizon-circle has a pin, d', on each side, which pins enter the slots in the support K.

S represents the sun. Its front is the arc of a circle of proper size to represent the size of the sun relatively to the globe F.

e' represents the suns rays.

f is a sliding pointer.

S is supported upon a sleeve, g', secured to the inner end ot' the arm C, which sleeve rotates upon the standard a.

In use, supposing the parts to be mounted as shown in Fig. 1, it the arm O be rotated,the arm B will be given a reciprocating movement by means ofthe ring upon its inner end,which moves around the eccentric c, and motion will be communicated to the wheel g, which will rotate the wheel t' and shaft D, which carries the earth. At the same time, by means of the upper part of the wheel gand the wheel q, the sleeve o, upon which the moon is mounted, will rotate and carry the yoke o and tube H with it, and the wheel I, being engaged with the xed bevelgear r, will rotate, causing the wire w and the moon J, which is secured to such wire, to rotate.

By mounting the horizon and twilight circles in the manner described I dispense with tightening-screws to hold the same in position, and the circles can be easily removed and replaced.

The tube H serves the purpose of a support for the wire which carries the moon. It might be supported by means of eyes secured. to a curved wire or rod of sufficient strength.

By loosening the screw which secures the sleeve G in place and turning the plate s, which is secured to such sleeve, the sleeve and inclined gear r can be brought to any desired position.

With this tellurian a great variety of illustrations can be made. In illustrating the. changes of the seasons the" earth must be supposed to revolve around the sun in one year. In illustrating the rising and setting ot` the sun and day and night the earth may bercvolved by hand on its axis. In illustrating the phases of the moon it must be supposed to rotate around the earth in four weeks. By means of the inclined gear r the varying inclinationsof the moons orbitcan be illustrated.

The proper methods of using this tellurian will be apparent to those accustomed to use similar devices.

If the pin upon the outer end ot' the bar B entered a round hole in the wheel g. great accuracy would be necessary as to the position ofthe pin; but by providing the slot h in such wheel g to receive such pin, if there is considerable variation in the position of this pin, it will not be material, the slot allowing therefor. The barB is prevented from havinglateral movement at the center by the bolt or screwf, and thereby the end of the lever is certain to be readily thrown past the center. The pin upon this bar fits closelyin the slot hone way.

As this tellu'rian is constructed the horizoncircle does not interfere with thef use ofthe moon.

The devices for rotating the moon are such that it will present the same side to the sun at all times. One half of the moon may be white and the other halt dark, the white portion being that which is always toward the sun.

What I claim as new, and desire to secure by Letters Patent, is as follows:

l. A curved wire or rod, w, carrying a ball, J, to represent the moon, and provided with a bevel-wheel, I, in combination with a bevelgear, 1', supported beneath the globe, for the purpose of keeping the illuminated side ot' the moon constantly toward the sun, substantially as specified.

2. A curved wire or rod, w, carryinga ball to represent the moon, and provided with 'a cogwheel, I, a yoke, n, and collar t, in combination with a bevel-gear,r,and sleeveo,substan tially as and for the purpose specified.

3. The yoke or support K, having its ends slotted and provided with a socket, by which it can be mounted on a fixed standard, within which the shaft which supports the earth rotatcs, in combination with a horizon-circle, L, provided with pins d to enter the slots in the ends of the yoke K, substantially as and for the purposes specified.

4. rlhe yoke or support K, provided with slots at its ends, a socket, b', for connecting the same to its standard, and pins c for the purpose of receiving and holding in position the horizon-circle L, substantially as specified.

5. The sleeve k, provided with a plate having a flange, m, to receive a screw or pin for the purpose ot' holding such sleeve in a tixed position, in combination with an arm, O, and shaft D to receive the globe F, substantially as specified.

6. The reciprocating bar B, supported by a screw or bolt,f, passing through a slot, e, in the bar, in combination with a wheel provided with a slot, h, to receive a pin on such bar B, substantially as and for the purpose specied.

THOMAS H. COSTELLO.

WVitnesses:

E. A. WEST, B. A. Paton.

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